2Li2SiO3 → 4Li+ + 3O22− + 2Si4+ + 6e−
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- Oxidation of lithium metasilicate
Oxidation of lithium metasilicate yields lithium ion, peroxide ion, silicon ion (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Oxidation of lithium metasilicate
General equation
- Oxidation of oxidizable species
- ReactantReducing agent ⟶ ProductOxidation product + e−
Oxidation state of each atom
- Oxidation of lithium metasilicate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Li2SiO3 | Lithium metasilicate | 2 | Reducing | – |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Li+ | Lithium ion | 4 | – | – |
| O22− | Peroxide ion | 3 | Oxidized | – |
| Si4+ | Silicon ion | 2 | – | – |
| e− | Electron | 6 | – | Electron |
Thermodynamic changes
Thermodynamic data of reactants
| Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
|---|---|---|---|---|
| Li2SiO3 (cr) | -1648.1[1] | -1557.2[1] | 79.83[1] | 99.08[1] |
| Li2SiO3 (vit) | -1628[1] | – | – | – |
* (cr):Crystalline solid, (vit):Vitreous liquid
Thermodynamic data of products
| Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
|---|---|---|---|---|
| Li+ (g) | 685.783[1] | – | – | – |
| Li+ (ao) | -278.49[1] | -293.31[1] | 13.4[1] | 68.6[1] |
| O22− | – | – | – | – |
| Si4+ (g) | 10429.75[1] | – | – | – |
| e− | – | – | – | – |
* (g):Gas, (ao):Un-ionized aqueous solution
References
List of references
- 1Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)